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RESEARCH PRODUCT
Effects of a macroscopic fixed charge inhomogeneity on some membrane transport properties
José A. ManzanaresSalvador MafeJulio Pellicer-porresM. Jesús Hernándezsubject
Quantitative Biology::Subcellular ProcessesBiomaterialsColloid and Surface ChemistryMembraneChromatographyCondensed matter physicsChemistryFixed chargeHomogeneousExperimental workMembrane transportSurfaces Coatings and FilmsElectronic Optical and Magnetic Materialsdescription
Abstract The effects that a macroscopic fixed charge inhomogeneity exerts on some membrane transport properties have been theoretically analyzed. To this end, we introduce two particular inhomogeneous fixed charge distributions on the basis of previous experimental work, and the transport equations are assumed to be the Nernst-Planck equations. It is found that a macroscopic redistribution of a constant quantity of fixed charge groups can modify the observed transport properties, the two inhomogeneous membranes here considered exhibiting permselectivities different from those of otherwise identical homogeneous membranes. Although the main emphasis of the study is on the basic aspects of transport through inhomogeneous membranes, some of the conclusions obtained may be of interest for membrane design and application.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1991-09-01 | Journal of Colloid and Interface Science |